EP2432256B1 - Verfahren, system und vorrichtung zur kanalsynchronisierung in einem multicast/broadcast-monofrequenznetz - Google Patents

Verfahren, system und vorrichtung zur kanalsynchronisierung in einem multicast/broadcast-monofrequenznetz Download PDF

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Publication number
EP2432256B1
EP2432256B1 EP10774556.4A EP10774556A EP2432256B1 EP 2432256 B1 EP2432256 B1 EP 2432256B1 EP 10774556 A EP10774556 A EP 10774556A EP 2432256 B1 EP2432256 B1 EP 2432256B1
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Prior art keywords
mcch
information
mbsfn
message
messages
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French (fr)
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EP2432256A1 (de
EP2432256A4 (de
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Dajun Zhang
Xiaodong Yang
Jing Liang
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

Definitions

  • the present invention relates to the field of radio communications and particularly to a channel synchronization method, system and device in a multicast single frequency network.
  • a Multimedia Broadcast and Multicast Service can provide a user in a radio cell with a multimedia broadcast and multicast service.
  • an MBMS can be provided at both an MBMS-specific frequency layer and a frequency layer shared between an MBMS service and a non-MBMS service.
  • An MBMS-enabled LTE cell may be an MBMS-specific cell or a hybrid MBMS/uni-cast cell.
  • An MBMS service can be transmitted in a single cell or in a plurality of cells.
  • An MBMS-specific frequency layer refers to a frequency layer dedicated to transmission of an MBMS.
  • the cell is referred to as an MBMS-specific cell; and when a cell is configured as a frequency layer which is not dedicated to transmission of an MBMS, the cell is referred to as a hybrid MBMS/uni-cast cell in which transmission of uni-cast and MBMS services is coordinated so that an MBMS service is transmitted at some times and a uni-cast service is transmitted at other times.
  • Transmission of an MBMS in a single cell refers to transmission of the MBMS only in the coverage area of a specified cell without any support of MBMS transmission in a plurality of cells in combination, and transmission of an MBMS in plurality of cells requires a support of a transmission mode of Multi Broadcast Single Frequency Network (MBSFN).
  • MBSFN Multi Broadcast Single Frequency Network
  • the MBSFN refers to synchronous transmission ongoing concurrently in a plurality of cells at the same frequency.
  • the use of this transmission mode can save a resource of frequencies and improve a spectrum utilization ratio. It requires concurrent transmission of the same contents in a plurality of cells.
  • a receiver of a UE can regard the plurality of MBSFN cells as a large cell. Therefore the UE will both be free of inter-cell interference resulting from transmission in an adjacent cell and benefit from superposition of signals from the plurality of MBSFN cells.
  • the MBSFN transmission mode can be adopted in both an MBMS-specific cell and a hybrid MBMS/uni-cast cell.
  • an advanced UE receiver technology can also address the problem of a time difference due to multi-path propagation and hence remove intra-cell interference.
  • a diversity effect resulting from such transmission in a plurality of cells at the same frequency can also address such a problem of covering a blind area, etc., and therefore enhance the reliability of reception and improve a coverage ratio.
  • MBMS point-to-multipoint Traffic Channel MTCH
  • MCCH MBMS point-to-multipoint Control Channel
  • MCH Multicast Channel
  • an MBSFN area can be semi-statically configured, for example, by an Operation and Management (O&M) device, etc.
  • O&M Operation and Management
  • a plurality of MCHs can be supported at a carrier frequency.
  • a physical resource of an MCH can be allocated in a pattern of specifying a sub-frame for the MCH, and correlated sub-frames may not necessarily be temporally adjacent. This pattern is referred to as an MCH Sub-frame Allocation Pattern (MSAP).
  • MSAP MCH Sub-frame Allocation Pattern
  • An MSAP of each MCH, over which an MTCH is carried, is signaled over an MCCH, and for an MCH onto which a plurality of MTCHs are mapped, the order in which the respective MTCHs is also signaled over an MCCH.
  • Data of only one MBSFN area is involved over one MCH, but a plurality of MBMS services can be mapped onto each MCH.
  • synchronous transmission of MCCH information in an MBSFN area has to also be ensured in an LTE system in addition to synchronous transmission of MBMS service in the MBSFN area because an MCCH is also mapped onto an MCH.
  • ZTE "Consideration on MBSFN support", 3GPP DRAFT; R3-081642, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE; 650, ROUTE DES LUCIOLES; F-06921 SOPHIA-ANTIPOLIS CEDEX; FRANCE, vol. RAN WG3, no. Sophia Antipolis, France; 20080609, 9 June 2008 , XP050165881, discloses the MCCH synchronization.
  • master constructs MCCH messages and signal slaves with RRC coded MCCH messages, along with the modification time which indicate the start time of messages should be updated in radio interface and cell information whose MCCH messages should be updated.
  • Master indicates cells in the same MBSFN with the same MCCH messages and modification time.
  • UMTS Universal Mobile Telecommunications System
  • E-UTRA Evolved Universal Terrestrial Radio Access
  • E-UTRAN Evolved Universal Terrestrial Radio Access
  • Stage 2 (3GPP TS 36.300 version 8.5.0 Release 8); ESTI TS 136 300", ETSI STANDARD, EUROPEAN TELECOMMUNICATIONS STANDARDS INSTITUTE (ETSI), SOPHIA ANTIPOLIS CEDEX, FRANCE, vol. 3-R2, no. V8.5.0, 1 July 2008 , XP014042193, discloses an MCE.
  • the MCE is a logical entity-this does not preclude the possibility that it may be part of another network element- whose functions are the allocation of the radio resources used by all eNBs in the MBSFN area for multi-cell MBMS transmissions using MBSFN operation.
  • Embodiments of the invention provide a channel synchronization method, system and device in a multicast single frequency network to address the problem in the prior art that synchronous transmission of MCCH information in an MBSFN area by base stations can not be guaranteed.
  • An embodiment of the invention provides a channel synchronization method in a multicast single frequency network, which includes:
  • a network device in the multicast single frequency network acquiring Multimedia Broadcast and Multicast Service, MBMS, service information, composing MBMS point-to-multipoint Control Channel, MCCH, messages from the MBMS service information, and adding the MCCH messages, time information of the MCCH messages and MCCH configuration information to an MBSFN MCCH Information message or an MBSFN MCH Information message, wherein the MBMS service information is carried in the MCCH messages;
  • the network device transmitting MBSFN MCCH Information message or the MBSFN MCH Information message to base stations in the multicast single frequency network via an interface;
  • the base stations in the multicast single frequency network transmitting the MCCH messages carried in the MBSFN MCCH Information message or the MBSFN MCH Information message to a user equipment over an MCCH according to the time information of the MCCH messages and the MCCH configuration information;
  • the MCCH configuration information comprises an MCCH scheduling repetition interval and/or information on an MCCH message modulation pattern.
  • a network device configured to acquire MBMS service information, to compose MBMS point-to-multipoint Control Channel, MCCH, messages from the MBMS service information, to add the MCCH messages, time information of the MCCH messages and MCCH configuration information to an MBSFN MCCH Information message or an MBSFN MCH Information message, and to transmit the MBSFN MCCH Information message or the MBSFN MCH Information message to base stations in the multicast single frequency network via an interface, wherein the MBMS service information is carried in the MCCH messages;
  • the base stations configured to transmit the MCCH messages carried in the MBSFN MCCH Information message or the MBSFN MCH Information message to a user equipment over an MCCH according to the time information of the MCCH messages and the MCCH configuration information;
  • the MCCH configuration information comprises an MCCH scheduling repetition interval and/or information on an MCCH message modulation pattern.
  • an information acquisition unit configured to acquire MBMS service information
  • a resource determination unit configured to compose MBMS point-to-multipoint Control Channel, MCCH, messages from the MBMS service information and to add the MCCH messages, time information of the MCCH messages and MCCH configuration information to an MBSFN MCCH Information or an MBSFN MCH Information message, wherein the MBMS service information is carried in the MCCH messages;
  • an information transmission unit configured to transmit the MBSFN MCCH Information message or the MBSFN MCH Information message to base stations in a multicast single frequency network over an interface so that the base stations in the multicast single frequency network can transmit the MCCH messages carried in the MBSFN MCCH Information message or the MBSFN MCH Information to a user equipment over an MCCH according to the time information of the MCCH messages and the MCCH configuration information;
  • the MCCH configuration information comprises an MCCH scheduling repetition interval and/or information on an MCCH message modulation pattern.
  • an information reception unit configured to receive an MBSFN MCCH Information message or an MBSFN MCH Information message transmitted from a network device in a multicast single frequency network, wherein the MBSFN MCCH Information message or the MBSFN MCH Information message carries MCCH messages, time information of the MCCH messages and MCCH configuration information;
  • a message transmission unit configured to transmit the MCCH messages carried in the MBSFN MCCH Information message or the MBSFN MCH Information message to a user equipment over an MCCH according to the time information of the MCCH messages and the MCCH configuration information;
  • the MCCH configuration information comprises an MCCH scheduling repetition interval and/or information on an MCCH message modulation pattern.
  • a network device in a multicast single frequency network transmits MBMS service information and information on time and frequency resources over which the MBMS service information is borne to base stations in the multicast single frequency network, and the respective base stations transmit the MBMS service information to a user equipment over the time and frequency resources, and since the respective base stations in the multicast single frequency network transmit the same MBMS service information over the same time and frequency resources notified from the network device, the respective base stations can transmit MCCH information synchronously.
  • an embodiment of the invention provides a channel synchronization method in a multicast single frequency network, and in the present method, a network device in the multicast single frequency network transmits MBMS service information and information on resources, over which the MBMS service information is borne, to base stations in the multicast single frequency network, and the base stations transmit the MBMS service information over the resources, so that the respective stations transmit MCCH information synchronously.
  • a channel synchronization method in a multicast single frequency network particularly includes the following operations 10 to 12.
  • the present embodiment can be applied in a scenario where an MBMS Coordination Entity, MCE, incorporated into a base station is deployed, where an O&M device determines one of the base stations in a multicast single frequency network as a primary base station, which transmits MBMS service information and resource information to the other base stations in the multicast single frequency network, particularly as follows:
  • the primary base station composes an MBSFN MCCH Information message upon reception of an MBMS session initiation message transmitted from a core network device (e.g., a Mobility Management Entity (MME), etc.) by extracting MBMS service information carried in the MBMS session initiation message, composing MCCH messages from the MBMS service information by carrying the MBMS service information in the MCCH messages, adding the MCCH messages to the MBSFN MCCH Information message, and also adding the identifier of the MBSFN area, time information and MCCH configuration information to the MBSFN MCCH Information message.
  • the other base stations are in a ready status upon reception of the MBMS session initiation message.
  • a specific format of the MBSFN MCCH Information message is as depicted in the table below: Type of Information Description of Information NBSFB Identity The identifier of the MBSFN area List of MCCH messages The MCCH messages composed from the MBMS session initiation message Time information The times at which the MCCH messages are scheduled MCCH configuration information Physical resource configuration of an MCCH
  • the MBSFN identity can distinguish one MBSFN area from another;
  • the MCCH messages in the list of MCCH messages are encoded by the primary base station into a message format that can be transmitted directly over an air interface, thus the other base stations can simply transmit the MCCH messages transparently;
  • the time information can particularly include the frame number of a radio frame in which the MCCH messages are scheduled, etc.;
  • the MCCH configuration information can particularly include the sub-frame numbers of sub-frames in which the MCCH messages are scheduled or the sub-frame number of a starting sub-frame, the amount of sub-frames, in which the MCCH messages are scheduled, information on a frequency resource, information on a scheduling pattern, an MCCH scheduling repetition interval, etc., for scheduling, where the information on a scheduling pattern includes an encoding pattern, an encoding rate, etc., and the MCCH scheduling repetition interval refers to an interval of time at which the base stations transmit the MCCH messages to a user equipment in the multicast single frequency network.
  • the primary base station can determine the frame number and the sub-frame numbers as follows:
  • the amount of sub-frames required for transmission of the MBMS service information is determined from the amount of data of the MBMS service information; sub-frames of that amount of sub-frames are selected from sub-frames currently available to transmission of MCCH control information; and the selected sub-frames are determined as the time resources over which the MBMS service information is borne, and the sub-frame numbers of the selected sub-frames and the frame number of a radio frame in which the sub-frames reside are determined as the information on the time resources over which the MBMS service information is borne.
  • the primary base station can determine the frame number, the starting sub-frame number and the amount of sub-frames as follows:
  • the amount of sub-frames required for transmission of the MBMS service information is determined from the amount of data of the extracted MBMS service information; one sub-frame are selected from sub-frames currently available to transmission of MCCH control information as a starting sub-frame; and the sub-frame number of the selected starting sub-frame, the frame number of a radio frame where the sub-frame resides and the amount of sub-frames are determined as the time resources over which the MBMS service information is borne.
  • the primary base station can add the information on the frequency resource, the information on the scheduling pattern and the MCCH scheduling repetition interval, which are pre-configured, to the MBSFN MCCH Information message.
  • Operation S02 the primary base station transmits the MBSFN MCCH Information message to the other base stations in the multicast single frequency network via an X2 interface.
  • Operation S03 the primary base station and the other base stations receiving the MBSFN MCCH Information message transmit the MCCH messages carried in the MBSFN MCCH Information message to the user equipment over the MCCH according to the time information and the MCCH configuration information carried in the MBSFN MCCH Information message.
  • the base stations transmit the MCCH messages to the user equipment in the sub-frames corresponding to the sub-frame numbers in the radio frame corresponding to the frame number over the frequency resource carried in the MBSFN MCCH Information message.
  • the MCCH messages may also be modulated according to the scheduling pattern information carried in the MBSFN MCCH Information message prior to transmission of the MCCH messages.
  • the base stations select sub-frames of that amount of sub-frames starting from the starting sub-frame corresponding to the starting sub-frame number in the radio frame corresponding to the frame number and transmit the MCCH messages to the user equipment in the selected sub-frames over the frequency resource carried in the MBSFN MCCH Information message.
  • the MCCH messages may also be modulated according to the scheduling pattern information carried in the MBSFN MCCH Information message prior to transmission of the MCCH messages.
  • the present embodiment can be applied in a scenario where an MBMS Coordination Entity, MCE, is deployed as a centralized control node, where the MCE transmits MBMS service information and resource information to base stations in a multicast single frequency network, particularly as follows: Operation S11: the MCE composes an MBSFN MCH Information message upon reception of an MBMS session initiation message transmitted from a core network device (e.g., a Mobility Management Entity (MME), etc.) by extracting MBMS service information carried in the MBMS session initiation message, composing MCCH messages from the MBMS service information, adding the MCCH messages to the MBSFN MCH Information message by carrying the MBMS service information in the MCCH messages, and also adding the identifier of the MBSFN area, time information and MCCH configuration information to the MBSFN MCH Information message.
  • MME Mobility Management Entity
  • a specific format of the MBSFN MCH Information message is as depicted in the table below: Type of Information Description of Information NBSFB Identity The identifier of the MBSFN area List of MCCH messages The MCCH messages composed from the MBMS session initiation message Time information The times at which the MCCH messages are scheduled MCCH configuration information Physical resource configuration of an MCCH
  • the MCCH messages in the list of MCCH messages are encoded by the MCE into a message format that can be transmitted via the M2 interface, and therefore the base stations shall transmit the MCCH messages after encoding it into a message format that can be transmitted via an air interface.
  • an O&M device transmits MBMS service information and resource information to base stations in a multicast single frequency network, particularly as follows:
  • an embodiment of the invention further provides a channel synchronization system including:
  • the primary base station is configured: to receive an MBMS session initiation message transmitted from a core network device, to extract the MBMS service information carried in the MBMS session initiation message, and to transmit the MBMS service information and the information on physical resources to the other base stations than the primary base station in the multicast single frequency network.
  • the MCE is configured:
  • the O&M entity is configured:
  • the network device 31 is configured to determine from the amount of data carried in the MBMS service information the amount of sub-frames required for transmission of the MBMS service information, to select sub-frames of that amount of sub-frames from sub-frames currently available to transmission of MCCH control information, and to determine the selected sub-frames as the time resources over which the MBMS service information is borne; and correspondingly the base stations 32 are configured to transmit the MBMS service information to the user equipment over the selected sub-frames.
  • the network device 31 is configured to determine from the amount of data carried in the MBMS service information the amount of sub-frames required for transmission of the MBMS service information, to select one of sub-frames currently available to transmission of MCCH control information as a starting sub-frame, and to determine the sub-frame number of the selected starting sub-frame, the frame number of a radio frame where the sub-frame resides and the amount of sub-frames as the time resources over which the MBMS service information is borne; and correspondingly the base stations 32 are configured to select sub-frames of the amount of sub-frames starting from the sub-frame corresponding to the starting sub-frame number in the radio frame corresponding to the frame number and to transmit the MBMS service information in the selected sub-frames.
  • the network device 31 is further configured to transmit information on an MCCH scheduling repetition interval to the base stations.
  • the base stations 32 each are further configured to, after transmitting the MBMS service information to the user equipment over the time resources and the frequency resource and upon reception of the MBMS service information and the information on the time resources transmitted again from the network device, select a sub-frame closest to the current time and in the MCCH scheduling repetition interval according to the information on the time resources and transmit in the sub-frame the MBMS service information received again.
  • the network device 31 is further configured to determine an MCCH message modulation pattern and to transmit information on the MCCH message modulation pattern to the base stations; and the base stations 32 are configured to transmit the MBMS service information to the user equipment in the MCCH message modulation pattern.
  • an embodiment of the invention further provides a network device applicable to a channel synchronization system, and the device includes:
  • the information acquisition unit 40 includes:
  • the information acquisition unit 40 includes:
  • the resource determination unit 41 includes:
  • the information transmission unit 42 is further configured:
  • an embodiment of the invention further provides a base station applicable to a channel synchronization system, and the base station includes:
  • the information reception unit 50 is further configured to receive information on an MCCH scheduling repetition interval transmitted from the network device and to receive the MBMS service information and the information on the time resources transmitted again from the network device; and the message transmission unit 51 is further configured to select a sub-frame closest to the current time and in the MCCH scheduling repetition interval according to the information on the time resources and to transmit in the sub-frame the MBMS service information received again.
  • the information reception unit 50 is further configured to receive information on an MCCH message modulation pattern transmitted from the network device; and the message transmission unit 51 is further configured to transmit the MBMS service information to the user equipment in the MCCH message modulation pattern.
  • a network device in the invention can alternatively be any other network device than a primary base station, an MCE and an O&M device, which is provided with a communication interface with base stations in an MBSFN.
  • a network device in a multicast single frequency network transmits MBMS service information and information on resources over which the MBMS service information is borne to base stations in the multicast single frequency network, and the respective base stations transmit the MBMS service information to a user equipment over the resources, and since the respective base stations in the multicast single frequency network transmit the same MBMS service information over the same resources signaled from the network device, the respective base stations can transmit MCCH information synchronously.

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Claims (14)

  1. Ein Kanalsynchronisationsverfahren in einem Multicast-Einfrequenznetzwerk, wobei das Verfahren Folgendes aufweist:
    eine Netzwerkeinrichtung in dem Multicast-Einfrequenznetzwerk, die MBMS-Dienstinformation (MBMS = Multimedia Broadcast and Multimedia Service) akquiriert, MCCH-Nachrichten (MCCH = MBMS point-to-multipoint Control Channel) aus der MBMS-Dienstinformation erstellt, und die die MCCH-Nachrichten, Zeitinformation der MCCH-Nachrichten und MCCH-Konfigurationsinformation zu einer MBSFN-MCCH-Informationsnachricht oder einer MBSFN-MCH-Informationsnachricht hinzufügt, wobei die MBMS-Dienstinformation in den MCCH-Nachrichten getragen bzw. geführt wird;
    wobei die Netzwerkeinrichtung die MBSFN-MCCH-Informationsnachricht oder die MBSFN-MCH-Informationsnachricht an Basisstationen in dem Multicast-Einfrequenznetzwerk über eine Schnittstelle sendet; und
    die Basisstationen in dem Multicast-Einfrequenznetzwerk die MCCH-Nachrichten senden, die in der MBSFN-MCCH-Informationsnachricht oder der MBSFN-MCH-Informationsnachricht geführt werden, und zwar an ein Nutzergerät über einen MCCH gemäß der Zeitinformation der MCCH-Nachrichten und der MCCH-Konfigurationsinformation;
    wobei die MCCH-Konfigurationsinformation ein MCCH-Einteilungswiederholungsintervall und/oder Information über ein MCCH-Nachrichtenmodulationsmuster aufweist.
  2. Verfahren nach Anspruch 1, wobei
    wenn die Netzwerkeinheit eine MBMS-Koordinatoreinheit bzw. MCE (MCE = MBMS Coordinator Entity) ist, dann die Netzwerkeinrichtung, die die MBMS-Dienstinformation akquiriert, Folgendes aufweist:
    die MCE, die eine MBMS-Sitzungsinitiierungsnachricht empfängt, die von einer Kernnetzwerkeinrichtung gesendet wird und die MBMS-Dienstinformation extrahiert, die in der MBMS-Sitzungsinitiierungsnachricht geführt wird; und
    wobei die Netzwerkeinrichtung, die die MBSFN-MCH-Informationsnachricht an die Basisstationen in dem Multicast-Einfrequenznetzwerk über eine Schnittstelle sendet, Folgendes aufweist:
    die MCE, die die MBSFN-MCH-Informationsnachricht an die jeweiligen Basisstationen in dem Multicast-Einfrequenznetzwerk über eine Schnittstelle sendet; oder
    wenn die Netzwerkeinrichtung eine primäre Basisstation in dem Multicast-Einfrequenznetzwerk ist, dann weist die Netzwerkeinrichtung, die die MBMS-Dienstinformation akquiriert Folgendes auf:
    die primäre Basisstation, die eine MBMS-Sitzungsinitiierungsnachricht empfängt, die von einer Kernnetzwerkeinrichtung gesendet wird und die MBMS-Dienstinformation extrahiert, die in der MBMS-Sitzungsinitiierungsnachricht geführt wird; und
    wobei die Netzwerkeinrichtung, die die MBSFN-MCH-Informationsnachricht an die Basisstationen in dem Multicast-Einfrequenznetzwerk über eine Schnittstelle sendet, Folgendes aufweist:
    die primäre Basisstation, die die MBSFN-MCCH-Informationsnachricht an andere Basisstationen als die primäre Basisstation in dem Multicast-Einfrequenznetzwerk über eine Schnittstelle sendet.
  3. Verfahren nach Anspruch 1, wobei, wenn die Netzwerkeinrichtung eine Betriebs- und Management- bzw. O&M-Einheit (O&M = Operation and Management) ist, die Netzwerkeinrichtung, die die MBMS-Dienstinformation akquiriert, Folgendes aufweist:
    die O&M-Einheit, die gespeicherte MCCH-Konfigurationsinformation nach der MBMS-Dienstinformation durchsucht; und
    wobei die Netzwerkeinrichtung, die die MBSFN-MCCH-Informationsnachricht oder die MBSFN-MCH-Informationsnachricht an die Basisstationen in dem Multicast-Einfrequenznetzwerk über eine Schnittstelle sendet, Folgendes aufweist:
    die O&M-Einheit, die die MBSFN-MCCH-Informationsnachricht oder die MBSFN-MCH-Informationsnachricht an entsprechende Basisstationen in dem Multicast-Einfrequenznetzwerk über eine Schnittstelle sendet.
  4. Verfahren nach einem der Ansprüche 1 bis 3, wobei die Zeitinformation der MCCH-Nachrichten eine Rahmennummer eines Funkrahmens aufweist, in dem die MCCH-Nachrichten eingeteilt sind.
  5. Verfahren nach einem der Ansprüche 1 bis 3, wobei die MCCH-Konfigurationsinformation ein MCCH-Einteilungswiederholungsintervall aufweist; und
    die Basisstationen, nach dem Senden der MCCH-Nachrichten an das Nutzergerät und auf den Empfang der MBSFN-MCCH-Informationsnachricht oder der MBSFN-MCH-Informationsnachricht hin, die wiederum von der Netzwerkeinrichtung gesendet werden, jeweils eine Zeitressource auswählen, die der aktuellen Zeit am nächsten und in dem MCCH-Einteilungswiederholungsintervall ist, und zwar gemäß der Zeitinformation, die in der MBSFN-MCCH-Informationsnachricht oder der MBSFN-MCH-Informationsnachricht geführt wird, die wiederum empfangen wird, und MCCH-Nachrichten senden, die in der MBSFN-MCCH-Informationsnachricht oder der MBSFN-MCH-Informationsnachricht geführt werden, die wiederum von der Nutzereinrichtung über die Zeitressource empfangen wird.
  6. Verfahren nach einem der Ansprüche 1 bis 3, wobei die MCCH-Konfigurationsinformation Information über ein MCCH-Nachrichtenmodulationsmuster aufweist; und
    die Basisstationen die MCCH-Nachrichten gemäß dem MCCH-Nachrichtenmodulationsmuster vor der Sendung der MCCH-Nachrichten modulieren.
  7. Ein Kanalsynchronisierungssystem, wobei das System Folgendes aufweist:
    eine Netzwerkeinrichtung (31), die konfiguriert ist zum Akquirieren von MBMS-Dienstinformation (MBMS = Multimedia Broadcast and Multimedia Service), um MCCH-Nachrichten (MCCH = MBMS point-to-multipoint Control Channel) aus der MBMS-Dienstinformation zu erstellen, und die MCCH-Nachrichten, Zeitinformation der MCCH-Nachrichten und MCCH-Konfigurationsinformation zu einer MBSFN-MCCH-Informationsnachricht oder einer MBSFN-MCH-Informationsnachricht hinzuzufügen, und um die MBSFN-MCCH-Informationsnachricht oder die MBSFN-MCH-Informationsnachricht an Basisstationen in dem Multicast-Einfrequenznetzwerk über eine Schnittstelle zu senden, wobei die MBMS-Dienstinformation in den MCCH-Nachrichten geführt wird; und
    die Basisstationen (32) konfiguriert sind zum Senden der MCCH-Nachrichten, die in der MBSFN-MCCH-Informationsnachricht oder der MBSFN-MCH-Informationsnachricht geführt werden, und zwar an ein Nutzergerät über einen MCCH gemäß der Zeitinformation der MCCH-Nachrichten und der MCCH-Konfigurationsinformation;
    wobei die MCCH-Konfigurationsinformation ein MCCH-Einteilungswiederholungsintervall und/oder Information über ein MCCH-Nachrichtenmodulationsmuster aufweist.
  8. Eine Netzwerkeinrichtung, die Folgendes aufweist:
    eine Informationsakquirierungseinheit (40), die konfiguriert ist zum Akquirieren von MBMS-Dienstinformation (MBMS = Multimedia Broadcast and Multimedia Service);
    eine Ressourcenbestimmungseinheit (41), die konfiguriert ist zum Erstellen von MCCH-Nachrichten (MCCH = MBMS point-to-multipoint Control Channel) aus der MBMS-Dienstinformation und zum Hinzufügen der MCCH-Nachrichten, von Zeitinformation der MCCH-Nachrichten und von MCCH-Konfigurationsinformation zu einer MBSFN-MCCH-Informationsnachricht oder einer MBSFN-MCH-Informationsnachricht, wobei die MBMS-Dienstinformation in den MCCH-Nachrichten geführt wird; und
    eine Informationsübertragungseinheit (42), die konfiguriert ist zum Senden der MBSFN-MCCH-Informationsnachricht oder der MBSFN-MCH-Informationsnachricht an Basisstationen in einem Multicast-Einfrequenznetzwerk über eine Schnittstelle, so dass die Basisstationen in dem Multicast-Einfrequenznetzwerk die MCCH-Nachrichten, die in der MBSFN-MCCH-Informationsnachricht oder der MBSFN-MCH-Informationsnachricht geführt werden, an ein Nutzergerät über einen MCCH gemäß der Zeitinformation der MCCH-Nachrichten und der MCCH-Konfigurationsinformation senden können;
    wobei die MCCH-Konfigurationsinformation ein MCCH-Einteilungswiederholungsintervall und/oder Information über ein MCCH-Nachrichtenmodulationsmuster aufweist.
  9. Netzwerkeinrichtung nach Anspruch 8, wobei die Informationsakquirierungseinheit (40) Folgendes aufweist:
    eine Empfangseinheit, die konfiguriert ist, um eine MBMS-Sitzungsinitiierungsnachricht zu empfangen, die von einer Kernnetzwerkeinrichtung gesendet wird; und
    eine Extraktionseinheit, die konfiguriert ist, um die MBMS-Dienstinformation zu extrahieren, die in der MBMS-Sitzungsinitiierungsnachricht geführt wird.
  10. Netzwerkeinrichtung nach Anspruch 8, wobei die Informationsakquirierungseinheit (40) Folgendes aufweist:
    eine Speichereinheit, die konfiguriert ist, um die MCCH-Konfigurationsinformation zu speichern; und
    eine Sucheinheit, die konfiguriert ist, um die Speichereinheit nach der MBMS-Dienstinformation zu durchsuchen.
  11. Netzwerkeinrichtung nach einem der Ansprüche 8 bis 10, wobei die Zeitinformation der MCCH-Nachrichten eine Rahmennummer eines Funkrahmens aufweist, in welchem die MCCH-Nachrichten eingeteilt sind.
  12. Eine Basisstation, die Folgendes aufweist:
    eine Informationsempfangseinheit (50) die konfiguriert ist zum Empfangen einer MBSFN-MCCH-Informationsnachricht oder einer MBSFN-MCH-Informationsnachricht, die von einer Netzwerkeinrichtung in einem Multicast-Einfrequenznetzwerk gesendet wird, in dem sich die Basisstation befindet, wobei die MBSFN-MCCH-Informationsnachricht oder die MBSFN-MCH-Informationsnachricht MCCH-Nachrichten, Zeitinformation der MCCH-Nachrichten und MCCH-Konfigurationsinformation führt; und
    eine Nachrichtensendeeinheit (51), die konfiguriert ist zum Senden der MCCH-Nachrichten, die in der MBSFN-MCCH-Informationsnachricht oder der MBSFN-MCH-Informationsnachricht geführt werden, an eine Nutzereinrichtung über einen MCCH gemäß der Zeitinformation der MCCH-Nachrichten und der MCCH-Konfigurationsinformation;
    wobei die MCCH-Konfigurationsinformation ein MCCH-Einteilungswiederholungsintervall und/oder Information über ein MCCH-Nachrichtenmodulationsmuster aufweist.
  13. Basisstation nach Anspruch 12, wobei, wenn die MCCH-Konfigurationsinformation ein MCCH-Einteilungswiederholungsintervall aufweist, die Informationsempfangseinheit (50) weiter konfiguriert ist:
    zum Empfangen der MBSFN-MCCH-Informationsnachricht oder der MBSFN-MCH-Informationsnachricht, die wiederum von der Netzwerkeinrichtung gesendet wird nach dem Senden der MCCH-Nachrichten an das Nutzergerät; und
    wobei die Nachrichtensendeeinheit (51) weiter konfiguriert ist:
    zum Auswählen einer Zeitressource, die der aktuellen Zeit am nächsten und in dem MCCH-Einteilungswiederholungsintervall ist, und zwar gemäß der Zeitinformation, die in der MBSFN-MCCH-Informationsnachricht oder der MBSFN-MCH-Informationsnachricht geführt wird, die wiederum empfangen wird, und zum Senden von MCCH-Nachrichten, die in der MBSFN-MCCH-Informationsnachricht oder der MBSFN-MCH-Informationsnachricht geführt werden, die wiederum von der Nutzereinrichtung über die Zeitressource empfangen wird.
  14. Basisstation nach Anspruch 12 oder 13, wobei die MCCH-Konfigurationsinformation Information über ein MCCH-Nachrichtenmodulationsmuster aufweist; und
    die Nachrichtensendeeinheit (51) weiter konfiguriert ist:
    zum Modulieren der MCCH-Nachrichten gemäß dem MCCH-Nachrichtenmodulationsmuster vor der Sendung der MCCH-Nachrichten.
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